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An in vitro nanocarrier-based B cell antigen loading system; tumor growth suppression via transfusion of the antigen-loaded B cells in vivo.
Int J Pharm
January 2025
Department of Pharmacokinetics and Biopharmaceutics, Institute of Biomedical Sciences, Tokushima University, 1-78-1, Sho-machi, Tokushima 770-8505, Japan; Innovative Research Center for Drug Delivery System, Institute of Biomedical Sciences, Tokushima University, 770-8505 Tokushima, Japan. Electronic address:
B cell-based vaccines are expected to provide an alternative to DC-based vaccines. However, the efficacy of antigen uptake by B cells in vitro is relatively low, and efficient antigen-loading methods must be established before B cell-based vaccines are viable in clinical settings. We recently developed an in vitro system that efficiently loads antigens into isolated splenic B cells via liposomes decorated with hydroxyl PEG (HO-PEG-Lips).
View Article and Find Full Text PDFDevelopment of the membrane ceiling method for in vitro spermatogenesis.
Sci Rep
January 2025
Research Institute for Microbial Diseases, Osaka University, Osaka, Japan.
Spermatogenesis is one of the most complex processes of cell differentiation and its failure is a major cause of male infertility. Therefore, a proper model that recapitulates spermatogenesis in vitro has been long sought out for basic and clinical research. Testis organ culture using the gas-liquid interphase method has been shown to support spermatogenesis in mice and rats.
View Article and Find Full Text PDFCase Series of Vaccine Hesitancy Encountered at the Pediatric Emergency Department.
Cureus
November 2024
Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu-shi, JPN.
Vaccine hesitancy (VH) is a significant concern, although its specific characteristics remain unclear. Moreover, strategies to shift vaccine-hesitant parents' attitudes toward immunization are not yet well-defined. Pediatric emergency department (ED) physicians frequently encounter patients who are inadequately vaccinated due to parental VH; however, it is challenging to allocate sufficient time during ED visits to provide comprehensive vaccination education.
View Article and Find Full Text PDFAge-associated aberrations of the cumulus-oocyte interaction and in the zona pellucida structure reduce fertility in female mice.
Commun Biol
December 2024
The Institute of Medical Science, The University of Tokyo, Minato-ku, Tokyo, 1088639, Japan.
One of the major age-related declines in female reproductive function is the reduced quantity and quality of oocytes. Here we demonstrate that structural changes in the zona pellucida (ZP) were associated with decreased fertilization rates from 34- to 38-week-old female mice, equivalent to the mid-reproductive of human females. In middle-aged mouse ovaries, the decline in the number of transzonal projections was accompanied by a decrease in cumulus cell-oocyte interactions, resulting in a deterioration of the oocyte quality.
View Article and Find Full Text PDFFirst recorded food-borne outbreak of gastroenteritis caused by enteroinvasive Escherichia coli serotype O8:H19 in Thailand.
Eur J Clin Microbiol Infect Dis
December 2024
Research Institute for Microbial Diseases, Osaka University, Suita, Osaka, Japan.
An enteroinvasive Escherichia coli (EIEC) outbreak affecting 154 individuals was identified among attendees at a wedding in Loei Province, Thailand. The median time to symptom onset was 18 h (range: 7-72 h). The epidemiological evidence suggested that larb-neua-dib (spicy minced raw beef salad) was the probable source of the outbreak.
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